Pineapples Cultivated by Conventional and Organic Methods in a Soil from a Banana Plantation. A Comparative Study of Soil Fertility, Plant Nutrition and Yields

Álvarez, Carlos E.; Carracedo, A. E.; Iglesias, Edelmiro López; Martinez, Michele

doi:10.1080/01448765.1993.9754629

Cited by 21 publications

(11 citation statements)

References 7 publications

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“…Surprisingly, our results indicated that the conventional treatment, which provided only chemical fertilisers and the highest quantity of N, showed the highest level of acidity compared to organic fertilisation. This was, however, in accordance with a study on ‘Red Spanish’ pineapple that compared conventional and organic fertilisation, reporting a higher level in free acid content with mineral fertilisation (Alvarez et al , 1993).…”

Section: Discussionsupporting

confidence: 90%

Low-Input Pineapple Crops With High Quality Fruit: Promising Impacts of Locally Integrated and Organic Fertilisation Compared to Chemical Fertilisers

2016

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SUMMARYFruit and vegetable farming generally involves high levels of chemical inputs despite the fact that consumers are increasingly concerned about the sanitary and organoleptic aspects of fruit quality. Pineapple is largely subject to these issues since it is dominated by conventional monocropping with high levels of agrochemical inputs due to nitrogen (N) and potassium (K) fertilisation, weed management, crop protection and flowering induction. However, low-input pineapple cropping systems are both rare and little documented. Our study aimed at replacing all or part of the chemical fertilisers used with local organic fertilisers. It was conducted on the cultivar 'Queen Victoria', without pesticides or herbicides, in Reunion Island. We compared the impacts of three fertilisation treatments on pineapple growth and yield, fruit quality traits, symptoms of two major fungal diseases in fruit and production costs and labour times: (i) conventional: NPK fertiliser at recommended doses (265.5 kg ha −1 N-10.53 kg ha −1 P-445.71 kg ha −1 K); (ii) integrated: Mucuna pruriens green manure (240.03 kg ha −1 N, 18.62 kg ha −1 P, 136.11 kg ha −1 K) incorporated into the soil and a half-dose of NPK fertiliser and (iii) organic: M. pruriens green manure incorporated into the soil and foliar applications of sugarcane vinasse from a local distillery, rich in K (14.44 g L −1 ). Our results showed that NPK fertilisation could be replaced by organic fertilisers as well as by integrated fertilisation. 'D'-leaf analysis showed that vinasse supplies a largely sufficient K level for growing pineapples. With organic fertilisation, pineapple growth was slower, 199 days after planting vs. 149 days for integrated or conventional fertilisations, and fruit yield was lower, 47.25 t ha −1 vs. 52.51 and 61.24 t ha −1 , probably because M. pruriens green manure provided an early increase in soil mineral N, whereas N requirements are much higher four months after planting. However, the fruit weight (709.94 ± 123.53 g) was still within the size range required for the export market (600-900 g). Interestingly, organic fertilisation significantly reduced Leathery Pocket disease and produced the best quality fruit with the highest total soluble solids contents (TSS) and the lowest titratable acidity (TTA). Fruit quality was also significantly improved with integrated fertilisation, with fruit weight similar to that of conventional fertilisation. To conclude, these findings have implications for the sustainability of pineapple production and could lead to low-input innovative cropping systems that reduce production costs and develop local organic inputs.

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Section: Discussionsupporting

confidence: 90%

Low-Input Pineapple Crops With High Quality Fruit: Promising Impacts of Locally Integrated and Organic Fertilisation Compared to Chemical Fertilisers

2016

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“…Several studies in the literature have reported no differences between organic and conventional fruit production in terms of desirable components such as ethanol, sugar, total acid and extract (Alvarez, Carracedo, Iglesias, & Martinez, ; Danner, ; Lutz, ; Woese, Lange, Boess, & Bögl, ), whereas others reported a higher concentration of soluble solids in organic farming (Rembiałkowska, , ; Zadoks, ). According to our analysis, organic farming induced significant increase in SC and significant decrease in skin hardness, thus exposing such organically grown grapes to heavier attack by the pest.…”

Section: Discussionmentioning

confidence: 99%

Susceptibility of table grape varieties grown in south‐eastern Italy to Drosophila suzukii

Baser

Broutou

Verrastro

et al. 2018

J Applied Entomology

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Since 2008, Drosophila suzukii, the spotted wing drosophila, has colonized most of the American and European continents, being able to adapt to very different climates. In Italy, this pest has been captured from northern Alpine to southern Mediterranean regions where it can infest a broad range of fruits, including wine grapes. Studies have shown that oviposition levels and developmental rates of D. suzukii on wine grapes are lower than on other berries, although recent observations indicate that grapes may become a suitable host plant in particular conditions. Here, we report, for the first time, the results of a series of no-choice oviposition experiments using berries of five table grape varieties sampled in the provinces of Taranto and Bari (Apulia region, south-eastern Italy) during 2013 from both organic and conventional farming systems.The sugar content (SC) and skin hardness of each sample were analysed to assess the influence of these physiological parameters on the susceptibility of table grapes to D. suzukii infestation. A negative correlation was found between the number of eggs laid and berry skin penetration force, whereas there was a positive one between the number of eggs and Brix values, as well as sampling date. In organic grapes, SC and skin hardness of two varieties ("Crimson" and "Scarlotta") were measured, respectively, higher and lower than in conventional grapes, thus making them more susceptible to pest infestation. The study hence shows that in laboratory conditions D. suzukii is able to heavily infest and develop on table grapes and that susceptibility to its infestation significantly depends on both variety and farming system. K E Y W O R D Salien invasive pests, conventional and organic farming, fruit flies, pest control

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“…Studies comparing soils of organically and conventionally managed farming systems have documented higher soil organic matter (OM) and total N with the use of organic practices (Lockeretz et al, 1981;Alvarez et al, 1988Alvarez et al, , 1993Reganold, 1988;Reganold et al, 1993;Drinkwater et al, 1995). Increases in soil OM following the transition to organic management occur slowly, generally taking several years to detect (Wander et al, 1994;Drinkwater et al, 1995;Werner, 1997), yet can have a dramatic effect on long-term productivity (Tiessen et Abbreviations: EC, electrical conductivity; IPM, integrated pest management; OM, organic matter; SAFS, Sustainable Agriculture Farming Systems [Project].…”

mentioning

confidence: 99%

Changes in Soil Chemical Properties Resulting from Organic and Low‐Input Farming Practices

et al. 1998

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Soil chemical properties during the transition from conventional to organic and low‐input farming practices were studied over 8 yr in California's Sacramento Valley to document changes in soil fertility status and nutrient storage. Four farming systems differing in crop rotation and external inputs were established on land previously managed conventionally. Fertility in the organic system depended on animal manure applications and winter cover crops; the two conventional systems received synthetic fertilizer inputs; the low‐input system used cover crops and animal manure during the first 3 yr and cover crops and synthetic fertilizer for the remaining 5 yr. At 4 and 8 yr after establishment, most changes in soil chemical properties were consistent with predictions based on nutrient budgets. Inputs of C, P, K, Ca, and Mg were higher in the organic and low‐input systems as a result of manure applications and cover crop incorporations. After 4 yr, soils in the organic and low‐input systems had higher soil organic C, soluble P, exchangeable K, and pH. Ceasing manure applications in the low‐input system in Year 4 resulted in declining levels of organic C, soluble P, and exchangeable K. Crop rotation (the presence or absence of corn) also had a significant effect on organic C levels. Differences in total N appeared to be related in part to inputs, but perhaps also to differing efficiency of the farming systems at storing excess N inputs: the low‐input system appeared to be most efficient, and the conventional systems were least efficient. Electrical conductivity (EC), soluble Ca, and soluble Mg levels were tightly linked but not consistently different among treatments. Relatively stable EC levels in the organic system indicate that animal manures did not increase salinity. Overall, our findings indicate that organic and lowinput farming in the Sacramento Valley result in small but important increases in soil organic C and larger pools of stored nutrients, which are critical for long‐term fertility maintenance.

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Pineapples Cultivated by Conventional and Organic Methods in a Soil from a Banana Plantation. A Comparative Study of Soil Fertility, Plant Nutrition and Yields

Cited by 21 publications

References 7 publications

Low-Input Pineapple Crops With High Quality Fruit: Promising Impacts of Locally Integrated and Organic Fertilisation Compared to Chemical Fertilisers

Low-Input Pineapple Crops With High Quality Fruit: Promising Impacts of Locally Integrated and Organic Fertilisation Compared to Chemical Fertilisers

Susceptibility of table grape varieties grown in south‐eastern Italy to Drosophila suzukii

Changes in Soil Chemical Properties Resulting from Organic and Low‐Input Farming Practices

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